TRS 308 specifications
Navy type	Type III
Density	7.90 g/cm³
Curie temperature (Tc)	320 °C
Dielectric constant (Kᵀ₃₃)	1360
Dielectric loss	0.3 %
Piezoelectric coefficient (d33)	312 pm/V
Transverse coefficient (d31)	-133 pm/V
Electromechanical coupling (k33)	0.72
Thickness coupling (kt)	0.49
Planar coupling (kp)	0.61
Planar frequency constant (Np)	2200 Hz·m
Thickness frequency constant (Nt)	2020 Hz·m
Mechanical Q (Qm)	2500

Other High-Power Hard PZT grades.

Every High-Power Hard PZT grade on its mechanical q.

Specifying TRS 308.

Shapes, poling modes, markets and documents for TRS 308.

Shapes: Disc
Rod
Plate
Bar
Rings
Tubes
Tolerances and metallization
Poling: ThicknessThe part is poled through the thickness and electroded on the positive and negative surfaces. Available for all part shapes.
ShearThe polarization direction is perpendicular to the electroded surfaces. Commonly supplied as plates and rings; offers increased sensitivity and minimises the pyroelectric effect.
RadialOffered on tubes and rings, including tubes with a wrap-around electrode.
Used in: Sonar arrays
Tubes for therapeutic ultrasound and HIFU
Shock-resistant sensors
Operating limits: Temperature, stress and field limits in the purchase terms
Documents: TRS 308 property summaryProperty sheet, Excel, 27 KB
TRS 300FG safety data sheetSafety data sheet, Word, 261 KB